Introduce enum class TextAffinity as replacement of enum EAffinity

Source/core/editing/FrameSelection.cpp

 /*
  * Copyright (C) 2004, 2008, 2009, 2010 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 25 matching lines @@
 #include "core/dom/Element.h"
 #include "core/dom/ElementTraversal.h"
 #include "core/dom/NodeTraversal.h"
 #include "core/dom/Text.h"
 #include "core/editing/EditingUtilities.h"
 #include "core/editing/Editor.h"
 #include "core/editing/GranularityStrategy.h"
 #include "core/editing/InputMethodController.h"
 #include "core/editing/RenderedPosition.h"
 #include "core/editing/SelectionController.h"
+#include "core/editing/TextAffinity.h"
 #include "core/editing/VisibleUnits.h"
 #include "core/editing/commands/TypingCommand.h"
 #include "core/editing/iterators/TextIterator.h"
 #include "core/editing/serializers/Serialization.h"
 #include "core/editing/spellcheck/SpellChecker.h"
 #include "core/events/Event.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalDOMWindow.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/Settings.h"
@@ skipping 88 matching lines @@
     setSelection(VisibleSelection(pos, pos, m_selection.isDirectional()), options, align);
 }
 
 void FrameSelection::moveTo(const VisiblePosition &base, const VisiblePosition &extent, EUserTriggered userTriggered)
 {
     const bool selectionHasDirection = true;
     SetSelectionOptions options = CloseTyping | ClearTypingStyle | userTriggered;
     setSelection(VisibleSelection(base, extent, selectionHasDirection), options);
 }
 
-void FrameSelection::moveTo(const Position &pos, EAffinity affinity, EUserTriggered userTriggered)
+void FrameSelection::moveTo(const Position &pos, TextAffinity affinity, EUserTriggered userTriggered)
 {
     SetSelectionOptions options = CloseTyping | ClearTypingStyle | userTriggered;
     setSelection(VisibleSelection(pos, affinity, m_selection.isDirectional()), options);
 }
 
 static void adjustEndpointsAtBidiBoundary(VisiblePosition& visibleBase, VisiblePosition& visibleExtent)
 {
     RenderedPosition base(visibleBase);
     RenderedPosition extent(visibleExtent);
 
@@ skipping 937 matching lines @@
     }
 
     willBeModified(alter, direction == DirectionUp ? DirectionBackward : DirectionForward);
 
     VisiblePosition pos;
     LayoutUnit xPos = 0;
     switch (alter) {
     case AlterationMove:
         pos = VisiblePosition(direction == DirectionUp ? m_selection.start() : m_selection.end(), m_selection.affinity());
         xPos = lineDirectionPointForBlockDirectionNavigation(direction == DirectionUp ? START : END);
-        m_selection.setAffinity(direction == DirectionUp ? UPSTREAM : DOWNSTREAM);
+        m_selection.setAffinity(direction == DirectionUp ? TextAffinity::Upstream : TextAffinity::Downstream);
         break;
     case AlterationExtend:
         pos = VisiblePosition(m_selection.extent(), m_selection.affinity());
         xPos = lineDirectionPointForBlockDirectionNavigation(EXTENT);
-        m_selection.setAffinity(DOWNSTREAM);
+        m_selection.setAffinity(TextAffinity::Downstream);
         break;
     }
 
     int startY;
     if (!absoluteCaretY(pos, startY))
         return false;
     if (direction == DirectionUp)
         startY = -startY;
     int lastY = startY;
 
@@ skipping 331 matching lines @@
 
     if (selectStartTarget && !selectStartTarget->dispatchEvent(Event::createCancelableBubble(EventTypeNames::selectstart)))
         return;
 
     VisibleSelection newSelection(VisibleSelection::selectionFromContentsOfNode(root.get()));
     setSelection(newSelection);
     selectFrameElementInParentIfFullySelected();
     notifyLayoutObjectOfSelectionChange(UserTriggered);
 }
 
-bool FrameSelection::setSelectedRange(Range* range, EAffinity affinity, DirectionalOption directional, SetSelectionOptions options)
+bool FrameSelection::setSelectedRange(Range* range, TextAffinity affinity, DirectionalOption directional, SetSelectionOptions options)
 {
     if (!range || !range->startContainer() || !range->endContainer())
         return false;
     ASSERT(range->startContainer()->document() == range->endContainer()->document());
     return setSelectedRange(EphemeralRange(range), affinity, directional, options);
 }
 
-bool FrameSelection::setSelectedRange(const EphemeralRange& range, EAffinity affinity, DirectionalOption directional, SetSelectionOptions options)
+bool FrameSelection::setSelectedRange(const EphemeralRange& range, TextAffinity affinity, DirectionalOption directional, SetSelectionOptions options)
 {
     if (range.isNull())
         return false;
 
     // Non-collapsed ranges are not allowed to start at the end of a line that is wrapped,
     // they start at the beginning of the next line instead
     m_logicalRange = nullptr;
     stopObservingVisibleSelectionChangeIfNecessary();
 
     // Since |FrameSeleciton::setSelection()| dispatches events and DOM tree
@@ skipping 384 matching lines @@
 
     Document* document = m_frame->document();
     bool caretBrowsing = m_frame->settings() && m_frame->settings()->caretBrowsingEnabled();
     if (!isNone() || !(document->hasEditableStyle() || caretBrowsing))
         return;
 
     Element* documentElement = document->documentElement();
     if (!documentElement)
         return;
     if (HTMLBodyElement* body = Traversal<HTMLBodyElement>::firstChild(*documentElement))
-        setSelection(VisibleSelection(firstPositionInOrBeforeNode(body), DOWNSTREAM));
+        setSelection(VisibleSelection(firstPositionInOrBeforeNode(body), TextAffinity::Downstream));
 }
 
 bool FrameSelection::dispatchSelectStart()
 {
     Node* selectStartTarget = m_selection.extent().computeContainerNode();
     if (!selectStartTarget)
         return true;
 
     return selectStartTarget->dispatchEvent(Event::createCancelableBubble(EventTypeNames::selectstart));
 }
@@ skipping 164 matching lines @@
 
 void showTree(const blink::FrameSelection* sel)
 {
     if (sel)
         sel->showTreeForThis();
     else
         fprintf(stderr, "Cannot showTree for (nil) FrameSelection.\n");
 }
 
 #endif